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All gastroenterology & hepatology briefings

The edition · Gastroenterology & Hepatology

Large colorectal polyps: cold snare had about 70% fewer major complications but twice the residual adenoma

A patient-level analysis of four trials defines where cold resection fits, experts call for earlier colorectal screening in MASLD, and even heterozygous alpha-1 antitrypsin carriers had more serious liver outcomes.

The edition in brief

An individual patient data meta-analysis of four randomised trials (1,509 non-pedunculated polyps of 20 mm or more, mean 31 mm) found cold snare resection had fewer major adverse events than hot EMR (1.7% vs 5.9%; OR 0.26) but more than twice the residual or recurrent adenoma (26.5% vs 12.8%; OR 2.61). The gap was smallest for sessile serrated lesions (15.0% vs 8.1%) and largest for adenomas with high-grade dysplasia (40.8% vs 18.0%). A 35-member international Delphi panel agreed that MASLD is associated with increased colorectal cancer risk and recommended greater vigilance and earlier, risk-adapted screening. In 22,537 US veterans with alpha-1 antitrypsin genotyping, major adverse liver outcomes rose with Z-allele burden: Pi*MZ HR 1.25, Pi*SZ 1.51, Pi*ZZ 1.80 against Pi*MM. A network meta-analysis of 13 randomised trials (4,156 participants) found AI-assisted colonoscopy modestly increased detection of diminutive polyps with very low certainty, and had minimal effect on polyps of 6 mm or more. The Rome V global survey of 28,771 adults in 15 countries found 40.9% met criteria for at least one disorder of gut–brain interaction, matching Rome IV.

In this edition
01Clinical update

Expert consensus: MASLD is associated with higher colorectal cancer risk and warrants earlier, risk-adapted screening

Check colorectal screening status at every MASLD review and do not defer it in patients with metabolic risk factors.

1 min · GutRead →
02Research

Alpha-1 antitrypsin deficiency: even MZ carriers were at higher risk of serious liver outcomes

Treat Pi*MZ carriage as a liver risk modifier: assess fibrosis and address alcohol and weight.

1 min · Hepatology (Baltimore, Md.)Read →
03Research

AI-assisted colonoscopy mainly found more diminutive polyps, with little gain for larger lesions

Use AI colonoscopy as an adjunct, knowing its gain is mostly in diminutive polyps.

1 min · Journal of medical Internet researchRead →
04Research

Rome V survey: four in ten adults worldwide met criteria for a disorder of gut–brain interaction

Diagnose disorders of gut–brain interaction positively with Rome criteria once alarm features are excluded.

1 min · GutRead →
05Pearl

Check the scar: surveillance after piecemeal resection of a large polyp

Book a scar check about 6 months after piecemeal resection of any polyp 20 mm or larger.

1 minRead →
06
Practice changer

Cold vs hot snare for large polyps: cold was safer, but doubled residual adenoma, most in high-grade dysplasia

Choose cold snare for large sessile serrated lesions and high-risk patients, and hot EMR for large adenomas.

2 min · GutRead →
Primary outcome
Major adverse events; residual or recurrent adenoma
Effect
Major AE 1.7% vs 5.9% (OR 0.26); residual adenoma 26.5% vs 12.8% (OR 2.61)

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